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Finding the Fourth Proportional to 124,202.79, 186,247.08 and 39,947.40

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Solution

The fourth proportional to 124,202.79, 186,247.08 and 39,947.40 is: 59,902.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,202.79 : 186,247.08 = 39,947.40 : x
  2. Step 2: Convert to fraction form
    124,202.79/186,247.08 = 39,947.40/x
  3. Step 3: Cross multiply
    124,202.79x = 186,247.08 × 39,947.40
  4. Step 4: Simplify right side
    124,202.79x = 7,440,086,603.59
  5. Step 5: Solve for x
    x = 7,440,086,603.59/124,202.79
  6. Step 6: Final answer
    x = 59,902.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.